Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (87,602)	$ (65,026)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	8,621	6,371
Stock-based compensation expense	49,483	44,459
Amortization or accretion of marketable securities	1,020	319
Impairment of long-lived assets	5,095	0
Other	493	105
Changes in operating assets and liabilities:
Accounts receivable, net	(23,428)	(11,141)
Prepaid expenses and other assets	(13,522)	(4,124)
Operating lease right-of-use assets	2,507	2,716
Accounts payable and accrued expenses	4,462	(5,274)
Accrued compensation and other liabilities	(1,151)	4,347
Operating lease liabilities	(3,136)	(3,191)
Deferred revenue	19,758	20,639
Net cash provided by operating activities	(37,400)	(9,800)
Cash flows from investing activities:
Purchases of marketable securities	(180,552)	0
Proceeds from maturities of marketable securities	15,000	153,981
Purchases of property, equipment, and software	(717)	(739)
Capitalized internal-use software costs	(7,266)	(6,598)
Net cash (used in) provided by investing activities	(174,489)	146,113
Cash flows from financing activities:
Proceeds from exercise of stock options	11,787	14,284
Proceeds from employee stock purchase plan	4,596	0
Proceeds from initial public offering, net of offering costs	0	525,284
Payment of deferred offering costs	(295)	(6,110)
Payment of tax withholding on vesting of restricted stock units	(4,852)	0
Net cash provided by financing activities	11,236	533,458
Net (decrease) increase in cash, cash equivalents, and restricted cash	(200,653)	669,771
Cash, cash equivalents, and restricted cash—Beginning of period	582,719	82,426
Cash, cash equivalents, and restricted cash—End of period	382,066	752,197
Reconciliation of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	380,005	749,649
Restricted cash	2,061	2,548
Total cash, cash equivalents, and restricted cash	382,066	752,197
Supplemental disclosure of cash flow information:
Cash paid for income taxes	1,475	874
Supplemental disclosure of noncash investing and financing activities:
Stock-based compensation capitalized as internal-use software costs	3,230	2,361
Unpaid deferred offering costs	0	339
Content Asset
Cash flows from investing activities:
Purchases of content assets	$ (954)	$ (531)